Aroben, Syria

Because Christians' monotheistic beliefs and worship of equality and fraternity were intolerable to the Roman Empire, the ruler at that time, and they were persecuted repeatedly. Countless martyrs testified for the Christian faith with their blood and lives. In 3 12 AD, the western Roman emperor Constantine the Great converted to Catholicism. The following year, together with the Eastern Roman Emperor, he issued the "Mill's Imperial edict", allowing freedom of belief and ending persecution. Constantine the Great unified East and West Rome and made Catholicism the state religion of the Roman Empire, which was the beginning of the integration of church and state in Rome. Therefore, with the prestige of the empire, Catholic beliefs spread everywhere. Western ethical values such as justice, equality, fraternity, freedom, peace and human rights all come from Catholic beliefs.

1054, the patriarch of Constantinople broke away from the Pope and established the Orthodox Church. 152 1 year, Father Martin Luther broke away from Catholicism and established Protestantism, and then other sects separated from Catholicism came into being (commonly known as Christianity in China). Apart from not recognizing the primacy of the Pope, there is no essential difference between the Orthodox Church and the Catholic Church. Christian sects differ from the primacy of the Pope in terms of doctrine and etiquette.